private static SDataParameters GetEnumerateParameters(ISDataClient client, string path, SDataEnumerateOptions options)
{
Guard.ArgumentNotNull(client, "client");
if (options == null)
{
options = new SDataEnumerateOptions();
}
return(new SDataParameters
{
Path = path,
Where = options.Where,
OrderBy = options.OrderBy,
Include = options.Include,
Select = options.Select,
Precedence = options.Precedence
});
}
public static Task <IEnumerable <T> > EnumerateAsync <T>(this ISDataClient client, string path = null, SDataEnumerateOptions options = null, CancellationToken cancel = default(CancellationToken))
{
var parms = GetEnumerateParameters(client, GetPath <T>(path), options);
var items = new List <T>();
Func <Task <ISDataResults <SDataCollection <T> > > > loop = null;
loop =
() => client.ExecuteAsync <SDataCollection <T> >(parms, cancel)
.ContinueWith(
task =>
{
var collection = task.Result.Content;
if (collection.Count == 0)
{
return(task);
}
items.AddRange(collection);
parms.StartIndex = (parms.StartIndex ?? 1) + collection.Count;
if (collection.TotalResults != null && parms.StartIndex > collection.TotalResults)
{
return(task);
}
return(loop());
}, cancel)
.Unwrap();
return(loop().ContinueWith(task => (IEnumerable <T>)items, cancel));
}
public static Task <IEnumerable <T> > EnumerateAsync <T>(this ISDataClient client, string path, T prototype, SDataEnumerateOptions options = null, CancellationToken cancel = default(CancellationToken))
{
return(EnumerateAsync <T>(client, path, options, cancel));
}
public static Task <IEnumerable <SDataResource> > EnumerateAsync(this ISDataClient client, string path = null, SDataEnumerateOptions options = null, CancellationToken cancel = default(CancellationToken))
{
return(EnumerateAsync <SDataResource>(client, path, options, cancel));
}
public static IEnumerable <T> Enumerate <T>(this ISDataClient client, string path = null, SDataEnumerateOptions options = null)
{
var parms = GetEnumerateParameters(client, GetPath <T>(path), options);
while (true)
{
var collection = client.Execute <SDataCollection <T> >(parms).Content;
if (collection.Count == 0)
{
break;
}
foreach (var item in collection)
{
yield return(item);
}
parms.StartIndex = (parms.StartIndex ?? 1) + collection.Count;
if (collection.TotalResults != null && parms.StartIndex > collection.TotalResults)
{
break;
}
}
}
public static IEnumerable <T> Enumerate <T>(this ISDataClient client, string path, T prototype, SDataEnumerateOptions options = null)
{
return(Enumerate <T>(client, path, options));
}
public static IEnumerable <SDataResource> Enumerate(this ISDataClient client, string path, SDataEnumerateOptions options = null)
{
return(Enumerate <SDataResource>(client, path, options));
}